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United States Patent | 6,102,691 |
Mitani ,   et al. | August 15, 2000 |
A combustion apparatus provided with a burner includes a fuel injection nozzle disposed rearward of a gas passable solid and a pre-mixture region between a downstream end of the solid and the fuel injection nozzle. The gas passable solid may be of a straightener type. Air for combustion includes main air and pilot air separated from each other. The apparatus may be coupled to each end of a radiant tube. The apparatus may be provided to a direct and indirect combustion type thermal facilities.
Inventors: | Mitani; Kazuhisa (Toyota, JP); Fukuta; Yukio (Toyota, JP) |
Assignee: | Toyota Jidosha Kabushiki Kaisha (Toyota, JP) |
Appl. No.: | 389467 |
Filed: | September 3, 1999 |
Apr 09, 1996[JP] | 8-86136 |
Current U.S. Class: | 431/215; 431/7; 431/11; 431/115; 431/166; 431/170; 431/328; 432/180 |
Intern'l Class: | F23D 011/44; 166 |
Field of Search: | 431/215,217,326,328,216,7,170,11,207,115,116,10,8,181,187,161,164,165,354,278 432/179,180,181,209 126/91 A |
4355973 | Oct., 1982 | Bailey | 432/209. |
4522588 | Jun., 1985 | Todd et al. | 431/215. |
5160254 | Nov., 1992 | Bell et al. | 431/326. |
5431147 | Jul., 1995 | Tanaka et al. | 431/170. |
5624252 | Apr., 1997 | Charles, Sr. et al. | 431/328. |
5667374 | Sep., 1997 | Nutcher et al. | 431/7. |